I can see them now , but there just isn't enough detail in the pics to make any suggestion as to what they are. I can see that the bug has long antennae, and appears to have what looks like feathering on a leg, and that's after using all my Photoshop skills. but ...

Clearly you are concerned about them being in your home. That's understandable.

Best first to get a good Id. Few bugs are a real and lasting problem.

Since you have captured one - why not send it to NHM - they will help.

Some local authorities can help - particularly those with a Biological Records Officer/Centre or an Ecologist.

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Questions I would have include:

How old is the house?

If it's new, was it built on farmland or...

Are the bugs out in the day , or there when you get up in the morning , or...

I will try and take a better photo tomorrow - but I live in a Victorian conversion (first and second floors) in South London. These have only just appeared after renovation work recently - the room had been shut up for some time. I only found the three this afternoon after shaking one of the curtains in my sitting room - the first one was spotted flying around late last Saturday night and the second on Sunday morning. I have been unaware of anything in the interim

Sending it to NHM is a good idea

Many thanks - it is a worry. My first thought was that they were cockroaches!

I'll look at properly later tonight, I didn't recognise it straight-off. - I put the revised image up so that others could see it as I saw it. Many people on here are much better at Id'ing beetles than I am.

"Noise" is a term in photography (and in information theory in general) - the grainy effect you get from pushing the exposure up a bit too much. It ain't a cockroach, OK?

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It would be a good idea to get the dead ones posted off to NHM tomorrow with a cover note referencing this discussion thread. Nothing like a specimen for getting a confirmed Id.

What is interesting is that there no evidence that I can find of cerambycids infesting a house (unless all the the furniture is made of wood covered in its original bark - just joking). Given that you live on the first and seconf floors - probably some 12 foot above ground level and the window openings another 6 foot up - their flying in seems somewhat remote, particularly the quantities you are seeing.

All of which makes your shipping of the dead ones to NHM the more essential.

Lets us all know what transpires ! I'm fascinated by it all.

Ray

(On BugGuide (the really great US bug Id site), someone from Arizona did once write in to say that he had found what turned out to be anarhopalus rusticus on his kitchen floor, but that hardly equates to your experience. )